Combination square



Nov.- 20, 1923.

COMBINATION SQUARE E. H. TEMPERLI 2 Sheets-Sheet i Filed May 29, 1922 6 g .10 m 2" l I I (B 6- 7 2 4-8 INVENTOR.

EH, Te er,

a 2mm BY W his ATTORNEY Nov. 20, 1923 7 1,474,652

E. H. TEMPERLI COMBINATION SQUARE 2 Sheet's-Sheet 2 Filed May 29. 1922 INVENTOR.

EH T m 5 his ATTO erlz.

Patented Nov. 20, 1923.

EDUARD H. 'rnivrrnnnr, or nncnnnrro, cnrrronnrn.

' COMBINATION SQUARE;

Application filed May 29, 1922. Serial Nof564,4.47.

An object of the invention is to provide a combination square of'extremely simple con struction which may be used for a great many purposes in laying out work.

Another object of the invention is to provide a combination square) which affords extreme accuracy.

The invention possesses other objects and features of advantage, someof which, with V the foregoing, will be set forth in the foll lowing description of the preferred form of my invention which is illustrated in the drawings accompanying and forming part of the specification. It is to be understood that I do not limit myself to the, showing made by the said drawings and description, as I may adopt 'variations'of the preferred form within the scopeof my invention as 'set forth in the claims. a

Referring to said drawings: Figure 1 is a side elevation of the device inposition for use as a bevel protractor.

' Figure 2 is a pla n view of the-square.

Figure 3 is an end view of the frame viewed from the right of Figure 1.

Figure 4: is an end view of'the square viewed from the left of Figure 1. Figure 5 is a vertical section of the square "taken on the line 5-5 of'Fig'ure 1, except T that the scale is swung to horizontal position. 7

Figure 6 is a sectional view of one of'the parts of the scale adjusting member, the plane of the section being indicated by the p along thefshaf-t at the side of the bladeiiIitersecting the apex of the depressionlf 7 Means'are provided for enabling the blade to be held in-various positionsandfor in- V dica'ting the angularity' of theblade when,

Formed adjacent one end of the frame is anaperture 21dividedby the slot. '6 in twosections 22fand 23. Thef s ec tion 23 is provided with tapering walls against 7 7 which the-correspondingly tapered sidesQei line 66 of Figure l0.

Figures .7, 8, 9, 10, 11 and'lQ' are side views of the various justing member. V e

Figure 13 is a perspective view of the device in position as a square or depthgauge.

Figure llis a-vertical section of the frame,

I the parts in dotted lines indicating the method of scribingthe center line on a taper shaft. The plane of the section is taken on parts of the scale- 'ad so held.

the line 141-14 of Figure 1,'the blade how ever having been shifted so as to be included in a section,

The combination square in the present embodiment of thefinvention comprises a"- rectangular frame-Q -preferably made of a single casting. Lying substantiallymidway between the broadsides 3 and 40f the frame and extending longitudinally thereof is a slot 61in which a blade or scale? is adapted to slidab-ly fit. Formed on one-of the longer sides 8 of the frame is V-shaped depression 9 which extends from oneend of the'frame to the other. The, depression 9 'commiinr? c-ates with the slot 6, the apex '12 of the de- 1 i pression' being disposed at the juncture of the side 13 of the'depressionand the, side 14:

of the slot, as clearly shown in Figure -5. This construction-sis of considerable advan tage since the mechanic may readily ascera tain the center of a shaft and the longitudinal center line thereof without the use of the usualV-blocks and surface gauge.- By holding-the blade in the slot so that one of the longer edges of the blade lies fiat'againstthe V r angular face 17 of the slot-and placing the shaft in the V-depre'ssion and against said" edge of the blade as shown in Figure 4, the 7 center of the shaft may be readily marked; 5

If 'it isdesired to mark the center line of the shaft on the surface thereof, the scriber J V 18 or other suitable marking tool may be run i v along the shaft againstthe side 19 ofthe frame as indicated in the figure last mentioned' In order that "the V-slot may be used for marking a center line on. taper shafts, a longitudinal extending portion 20 of the side 13 ofthe' depression is cut away at the apex, so that when a'taper' shaft is placedin the depression and the longer edge of the blade held fiat there-against as may be inserted into the depression from 'shown in Figure 1 1, the point of a scriber the broad-side 3 of the frame and then run of a bushing or center-piece 26 is adapted to fit. The bushing26 is initially inserted in the aperture section 23 through the section 22, and may be held loosely or tightly in the former by means of the externally threaded hollow nut 27 which engages the internal threads 28 of the bushing. Extending through the nut and engaging in the threaded portion 29 of the sleeve is a screw 31 carrying at its point a feather 32 which is arranged to engage in a longitudinally extending groove 33 formed in one side of the blade. Connection between the screw and feather is provided by means of the reduced end 34 of the screw, which rotatably fits ina central aperture 36 formed in the feather and countersunk for the reception of theflattened extremity of the screw. The feather is held against rotation with respect to the sleeve but allow-ed reciprocative movement by being mounted in a slot 37 formed in the sleeve. The opposite sides of the groove 33 of the blade are tapered, and the sides of the feather are tapered correspondingly so that the feather may be tightly wedged in the groove when the screw 31 is fully advanced. Suitably held on the sleeve against rotation therewith, is an indicating member 38, which as here shown is formed with a straight sided segment 39 which is adapted to fit against a similar formed segment 41 formed on the portion of the sleeve which protrudes from the aperture. The indicating member is provided with a'pointer 42 which is arranged to cooperate with a graduated segment 43 formed on the frame and being concentric with the sleeve. The indicating member is adapted to rest against the side 0;" the frame, and a washer is preferably interposed between said member and the shoulder 44 of the nut 27 so that the turning of the nut will not effect the indicating member or the sleeve. In order that the movement of the nut will be limited and still allow the sleeve to be properly tightened or loosened, I preferably form a cut out segment 46 at the end of the nut and place screw 45 in the sleeve for engagement with the ends of said segment. When it is desired to use the device as a bevel protractor, the blade is inserted in the slot so that the feather engages the groove. With the blade then moved to the desired angle (as will be indicated by the'position of the pointer on the graduated segment) the nut is turned so as to tightly clamp the sleeve and indicator against the frame. The screw 31 is then turned so as to cause the feather to wedge securely in the groove and thereby hold the blade in rigid position. To release the members the foregoing steps are practically reversed. The device is also particularly adapted for measuring the taper of a shaft. This is done by merely setting one of the sides of the frame and one of the edges of the blade against the side and end of the shaft. The blade may be then clamped and the device will be set to the correct taper.

The sides 47 and 48 are provided with level glasses 49 and 50 respectively, thereby enabling the device to be used as a level and plumb level.

I claim:

1. in a combination square, a frame having a ll-shaped depression formed on one face thereof and extending from one end of the frame to the other, said frame being provided with a slot lying parallel to'said depression and extending inwardly from the apex thereof, and a blade adapted to slidably fit in said slot and extend into said depression.

2. In a combination square, a frame having a if-shaped depression formed on one side and extending longitudinally thereof, said frame having a slot running parallel with and communicating with said depression and having one side thereof exactly terminating at the apex of said depression and havingthe other side terminating intermediate one of the sidesof said depres sion, and a blade adapted to slidably fit in said slot and extend into said depression.

3. In a combination square, a frame having a longitudinally extending V-shaped depression formed one one side thereof, said frame having a slot communicating with said depression and: having one side thereof terminating exactly at the apex of said depression and having the other side terminating intermediate one of the sides of said depression, and a blade adapted to slidably fit in said slot and extend into said depression, a longitudinally extending portion of the frame from the apex to the other side of said groove being cut away for the insertion of a scribing tool.

4. In a combination square, a frame having a slot, a blade adapted to slidably fit in said slot and provided with a longitudinal. groove having tapered sides, and means adapted to ress a ainst said sides whereb x I J said blade will be clamped against said frame.

5. In a combination square, a frame havinga slot, a blade adapted to slidably lit in said slot and provided with a groove, feather adapted to engage in said groove, and a screw connected to said feather whereby the latter may be moved in or out of said groove.

6. In a combination square, a frame having a slot, a blade adapted to slidably, fit in said slot and provided with a groove having tapering sides, a beveled feather adapted to engage the sides of said groove and provided,

fixed to said feather and rotatively held in said opening whereby said feather may be vmoved in or out of said groove upon the turning of the screw.

7. In a combination square, a frame having a slot and an aperture having tapering walls, a bladeadapted to slidably fit'in said slot and provided with a groove, a-feather adapted to engage in said groove, a sleeve adapted to fit in said opening provided with correspondingly tapered outer walls and a threaded portion, a threaded nut adapted to engage said threaded portion whereby said sleeve may be drawn tightly in said frame, and a screw extending through said nut and engaging in said sleeve adapted for moving said feather in or outof said groove.

8. In a combination square, a frame having aslot and an aperture having tapering side walls, a blade adapted to slidably fit in said slot and provided with a groove, a sleeve fitting in said aperture having outer walls corresponding to said aperture, said'sleeve having an internally threaded portion, a threaded nut adapted to engage said threaded portion whereby said sleeve may be tightly held in the frame, and a screw respectively extending through and engaging said nut and sleeve and rotatably attachedto said feather whereby the latter willbe moved in or out of said groove upon the rotation of the screw.

9. Ina combination square, a frame having a slot and an aperture having tapering sides, a blade adapted to slidably fit in said slotand provided with a groove, an internally. threaded sleeve fitting in said aperture and tapered correspondingly, an indicating member held on and movable with said sleeve, a feather movable aXially'in said sleeve and arranged to engage said groove,

athreaded nut arranged to engage said sleeve whereby the latter may be held tighted" segment on said frame concentrically dis- I slot and provided with a groove, a graduatposed with respect to and adjacent said aperture, an internally. threaded sleeve fit ting in and tapered externally similar to' said aperture, an indicating member held on and movable with said sleeve and pro-- vided with a pointer cooperating with said segment, a feather arranged .to engage in said groove and held in said sleeve for axialv movement relative thereto, a threaded nut engaging said sleeve adapted for drawing.

said sleeve tightly against the sides of said.

aperture, a screw extending throu h said nut and sleeve and having a threa ed e11 gagement with thelatter, said feather having'a central aperture in which one, end of said screw is rotatably secured, and means for limitingthe rotation of said nut.

11. In a'combination square, a frame formed of a single integral, piece and provided with a slot and an aperture havingtaperingsides, ablade arranged to fitin said slot and provided with a groove having, tapering sides, a V-shaped depressed face on one side of said frame communicat ing with said slot, a level glass and a plumb level glass on othersides'of said frame, a

with beveled sides and a central aperture, 7

an internally threaded sleeve arranged in and having its outer sides tapered similar to said first mentioned aperture,'said sleeve be-" ing provided with a recess for the reception of said feather, a graduated segment pro vided onsaid frame and concentrically disposed with'resp'ect to said sleeve, an indieating member held on said sleeve for -ro'- '90 er for cooperation with said s'egment,a hol- I tation therewith and provided with a point-I low externally threaded'knurled nut e'ngaging in said sleeve and adapted to clamp the sleeve and indicating member and blade- 7 against rotation, a screw extending through said nut and sleeve and havinga threaded engagement with theflat'ter, one end-of, said 5 screw bein rotatably'secured in the central i the feather, and means for aperture of iting the rotation ofsaid nut.

In testimony whereof, I have hereunto set my hand at Oakland, this 23rd day of May, 1922.

EDUARD H. TEMPERL I'. I r f i 

